Dahua IPC/VTH/VTO - Authentication Bypass (CVE-2021-33044)
Description
The identity authentication bypass vulnerability found in some Dahua products during the login process. Attackers can bypass device identity authentication by constructing malicious data packets.
psychologyCrowdSec Analysis
CVE-2021-33044 is an authentication bypass vulnerability present in certain Dahua products, which allows attackers to circumvent device login protections by sending crafted requests.
CrowdSec has been tracking this vulnerability and its exploits since 4th of September 2024.
Insights from the CrowdSec network reveal that the attackers trying to exploit CVE-2021-33044 are composed of a fairly even mix of opportunistic and targeted actors. Some attackers employ preliminary reconnaissance, while others use indiscriminate scanning. Data from the CrowdSec community also indicates a gradual decrease in attacks targeting CVE-2021-33044. While still present in the wild, exploitation levels have dropped noticeably week-over-week. This may signal that the vulnerability is becoming less relevant or that defenses are improving fast enough for attackers to lose interest.
Attack attempts generally involve requests to URLs containing /rpc2_login.
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| Event | Date |
|---|---|
| CVE Published | 2021-09-15 |
| CISA KEV | 2024-08-21 |
| Rule Released | 2024-09-04 |
| CISA Remediation Deadline | 2024-09-11 |
| CrowdSec First Seen | 2024-11-23 |